// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once

namespace kumo::pollux {
    // Copied from format.h of fmt.
    MELON_ALWAYS_INLINE int countDigits(__uint128_t n) {
        int count = 1;
        for (;;) {
            if (n < 10) {
                return count;
            }
            if (n < 100) {
                return count + 1;
            }
            if (n < 1000) {
                return count + 2;
            }
            if (n < 10000) {
                return count + 3;
            }
            n /= 10000u;
            count += 4;
        }
    }
} // namespace kumo::pollux
